Re ran YPAO 3 times with the same out of phase message on the 4 channels wired to my ADA1000.The wiring is correct. Any chance RCA cables for video are different( I used left over cables from the satelite/PVR packaging)? I can't see it being the output on the reciever or the input on the amp.I could swap the cables on one speaker and re run YPAO. Is there a risk of damaging speakers when used out of phase?

It is possible in certain situations to get false positives during auto calibration checks. Audyssey states that it is simply a 'warning' to double check you wiring. If you are satisfied everything is correct, then just hit [Skip] and proceed. It will have no effect on the rest of the calibration. I suspect it will not effect the results of YPAO either.

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With great power comes Awesome irresponsibility.

Thanks.The sound isn't quite right but I moved/swapped every speaker when I set it up and think this might be why.I've never had it display more than one channel out of phase before. Its actually pretty normal.I think I'll swap the cables on the surrounds, listen to them for a bit and re run YPAO. It should sound better or worse and I'll know, right?I've already had one scare with my M80's (havent been able to run them for a month) so I'll be a bit more carefull this time around.

Re ran YPAO 3 times with the same out of phase message on the 4 channels wired to my ADA1000.The wiring is correct. Any chance RCA cables for video are different( I used left over cables from the satelite/PVR packaging)? I can't see it being the output on the reciever or the input on the amp.I could swap the cables on one speaker and re run YPAO. Is there a risk of damaging speakers when used out of phase?

If all four channels are out of phase they are in effect in phase relative to each other but may be reversed in polarity compared to any other channels. How many other channels are you using and how are they wired?

I finally gave up and listened to the voices in my head.They sound quite a bit better now.I don't know where/how/why but...Officially I swapped + & - on the M80's and I'm at peace again.I'll swap the cables on my rear towers and deal with the why later.

Keep in mind that YPAO, Audyssey and other similar auto-setup programs can be very error-prone with phase calculations, especially with bipole, dipole or multi-directional surrounds like Axiom's QS8s and QS4s.

My best advice is to carefully wire your mains and surrounds noting the polarity of each cable and connection and not rely on the auto-setup schemes when it comes to phase determination.

Keep in mind that YPAO, Audyssey and other similar auto-setup programs can be very error-prone with phase calculations, especially with bipole, dipole or multi-directional surrounds like Axiom's QS8s and QS4s.

My best advice is to carefully wire your mains and surrounds noting the polarity of each cable and connection and not rely on the auto-setup schemes when it comes to phase determination.

Regards,Alan

Thanks. I can't explain it, somethings wrong somewhere.The wirings pretty straight forward. While its certainly not the first time I've swapped cables and or speakers it is the first time I've used the preouts on this reciever and or a seperate amp (other than for a passive sub).Its internal and it'll bug me for a while.I've moved my QS4's to the front presence locations in prepperation for QS8's in May. The towers I placed as my surrounds have been there before and are pleasing, I found myself being especially fond of the sound coming off the sides of them last time they were in this position. A little more placment tweaking and a wire swap and I'll try Avatar for the first time at home.